How do I convince my parents to go to a party and sleepover ?
I am 17 year old girl (in grade 12) and the sports team I am on has a party at the end of the season. Problem is its a drinking party (drinking legal age where I live is 19) and my parents don't drink and don't really want me drinking. The party is small only around 20 people (only those on my team and a few out of town kids who train with my team invited) and my parents know most of the kids (I have known all those invited for several years).
They trust me and my teammates to be safe (my sports team is very close like a second family so none of us would ever date each other) and will most likely let me go but will expect me to drive home after the party which will not work because I am planning on drinking a little bit (like a few sips to one drink) so it would not be safe to drive home.
I don't know how to convince them to let me sleepover afterwards though because the party is at a guys house, my parents know both his parents so that might help but since his Mom is a teacher only his Dad will be home (his Mom knows about the party), but most of the people there will be guys (like 12 guys and 8 girls). Also I feel it would be safe to sleepover as the guy hosting it is very responsible, all of the people invited are in high school, we are all like family to each other (friend zone level 90000: 2nd family), and I trust them , plus his Dad will be there.
How do I convince them to let me go to the party and sleep over after it?